/Engine/Source/Editor/MeshPaint/Public/BaseMeshPaintGeometryAdapter.h
Base mesh paint geometry adapter, handles basic sphere intersection using a Octree
class FBaseMeshPaintGeometryAdapter : public [IMeshPaintGeometryAdapter](API\Editor\MeshPaint\IMeshPaintGeometryAdapter)
TArray< uint32 ...
MeshIndices
TUniquePtr< FMe...
MeshTriOctree
Octree used for reducing the cost of sphere intersecting with triangles / vertices
TArray< FVector...
MeshVertices
Indexand Vertex data populated by derived classes in InitializeVertexData